Graffiti is freedom of speech
Freedom of expression
While freedom of expression by non-speech means is commonly thought to be protected under the First Amendment, the Supreme Court has only recently taken this view. As late as 1968 (United States v. O'Brien) the Supreme Court stated that regulating non-speech can justify limitations on speech. The Court carried this distinction between speech and expression through the early part of the 1980s (Clark v. CCNV, 1984). It was not until the flag-burning cases of 1989 (Texas v. Johnson) and 1990 (United States v. Eichman), that the Supreme Court accepted that non-speech means applied to freedom of expression and freedom of speech.